2212 Hephaistos (1978 SB)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.8346603000
Semi-major axis (a)2.1675877000 AU
Inclination (i)11.20255000°
Long. of Asc. Node (Ω)26.56556000°
Arg. of Perihelion (ω)210.46301000°
Mean Anomaly (M)308.24302000°
Mean Motion (n)0.3088439100°/day
Perihelion dist (q)0.35838830 AU
Aphelion dist (Q)3.97678710 AU
Orbital Period3.19128080 yr
Physical Parameters
H (abs. magnitude)13.45
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.730″
Uncertainty0
Orbit TypeApollo
MOID0.111922 AU
Observations Used4548
Oppositions39
Arc Total1978-2026
First Observation Used
Last Observation Used2026-03-22
Observations (4672)
Date Type RA Dec Mag Band Observatory
2016-01-13 02:56:32 C 03 37 14.69 +30 17 23.4 R G45
2016-01-13 03:04:56 C 03 37 14.41 +30 17 21.6 R G45
2016-01-13 03:11:28 C 03 37 14.20 +30 17 20.6 R G45
2016-01-14 03:57:10 C 03 36 29.00 +30 12 39.5 R G45
2016-01-14 04:05:25 C 03 36 28.72 +30 12 38.0 R G45
2016-01-14 04:14:55 C 03 36 28.43 +30 12 36.2 R G45
2016-01-14 04:34:43 C 03 36 27.80 +30 12 32.4 R G45
2016-01-14 04:44:16 C 03 36 27.51 +30 12 30.9 R G45
2016-01-14 04:53:41 C 03 36 27.22 +30 12 28.9 R G45
2016-01-23 07:07:08 C 03 31 14.100 +29 33 57.03 L F51
2016-01-23 07:20:45 C 03 31 13.845 +29 33 54.80 L F51
2016-01-23 07:34:24 C 03 31 13.580 +29 33 52.52 L F51
2016-01-23 07:48:06 C 03 31 13.319 +29 33 50.19 L F51
2016-02-03 06:24:49 C 03 28 12.811 +28 56 06.54 L F51
2016-02-03 06:41:55 C 03 28 12.702 +28 56 04.13 L F51
2016-02-03 06:59:05 C 03 28 12.612 +28 56 02.20 L F51
2016-02-03 07:16:21 C 03 28 12.506 +28 55 59.79 L F51
2017-09-17 13:21:15 C 03 39 15.74 +23 19 16.1 L T08
2017-09-17 13:28:20 C 03 39 15.64 +23 19 16.2 L T08
2017-09-17 13:30:24 C 03 39 15.48 +23 19 15.8 L T08
2017-09-17 13:36:47 C 03 39 15.40 +23 19 15.1 L T08
2017-09-17 13:59:26 C 03 39 14.94 +23 19 16.9 L T08
2017-09-17 14:02:32 C 03 39 14.87 +23 19 16.2 L T08
2017-09-25 06:16:23 C 03 34 53.87 +23 20 29.6 q W98
2017-09-25 06:26:33 C 03 34 53.46 +23 20 30.1 q W98
2017-09-25 06:36:43 C 03 34 53.18 +23 20 31.3 q W98
2017-09-28 11:05:35 C 03 32 39.52 +23 19 21.6 q 703
2017-09-28 11:14:00 C 03 32 39.26 +23 19 21.3 q 703
2017-09-28 11:22:19 C 03 32 38.95 +23 19 21.4 q 703
2017-09-28 11:30:37 C 03 32 38.68 +23 19 21.1 q 703
2017-09-29 12:42:46 C 03 31 51.46 +23 18 47.9 L T08
2017-09-29 12:57:50 C 03 31 51.03 +23 18 46.5 L T08
2017-09-29 13:01:08 C 03 31 50.98 +23 18 47.3 L T08
2017-09-29 13:23:45 C 03 31 50.24 +23 18 46.0 L T08
2017-10-01 08:48:33 C 03 30 25.29 +23 17 30.8 q 703
2017-10-01 08:55:36 C 03 30 25.05 +23 17 31.6 q 703
2017-10-01 09:02:37 C 03 30 24.87 +23 17 30.9 q 703
2017-10-01 09:09:38 C 03 30 24.61 +23 17 30.3 q 703
2017-10-13 09:52:33 C 03 19 12.14 +23 00 31.7 U 703
2017-10-13 10:04:16 C 03 19 11.70 +23 00 31.2 U 703
2017-10-13 10:13:12 C 03 19 11.30 +23 00 29.9 U 703
2017-10-13 10:22:10 C 03 19 10.89 +23 00 29.3 U 703
2017-10-16 08:18:13 C 03 16 03.45 +22 54 01.1 U 703
2017-10-16 08:25:53 C 03 16 03.08 +22 54 00.0 U 703
2017-10-16 08:33:36 C 03 16 02.72 +22 53 58.8 U 703
2017-10-16 08:41:14 C 03 16 02.42 +22 53 58.2 U 703
2017-10-19 03:45:04 C 03 12 55.05 +22 46 53.3 c J04
2017-10-19 04:01:54 C 03 12 54.25 +22 46 51.5 c J04
2017-10-19 04:18:44 C 03 12 53.43 +22 46 49.6 c J04
2017-10-19 04:35:34 C 03 12 52.62 +22 46 47.5 c J04